import string



# 1.
def product(n1,*args):
    s=1
    for x in args:
        s=s*x;
    return s*n1


# 2. 求阶乘

def myfac(n):
    if n==1:
        return 1
    else:
        return myfac(n-1)*n

# 3. 将首字母 变为小写

L1 = ['Hello', 'World', 18, 'Apple', None]
def normalize(name):
    pass
    return name[0].lower() + name[1:].upper()
L2 = list(map(normalize, L1))
print(L2)






